Please help, vip tire fitment gurus ?

I've rolled some, pulled some, cambered some, now I need to stretch a lot. Help me out here,

19x10 and 19x 11.5

I'm thinking 245/35/19 and 275/30/19 w/ reinforced sidewalls from falken fk452s? Or do you thinkg I should bump it up a notch to 235/35/19 and 265/30/19 w/ reinforced sidewalls from falken fk452s? 

Pls. help, thanks!

245/275 will be nice.  Not extreme but a nice stretch.   

If your setup needs more clearance, you could do the 235/265 but it will be very stretched.

hey man i think i can help you on this one, on my bimmer im running 19X10 front and 19X11 rear with falken 452's i initially had 245/35/19 front adn 275/30/19 rear and was not too happy with the stretch, about 2 weeks ago i switched them with 235/35/19 and 265/30/19 Falken 452's and the stretch is just perfect. now being that you have 11.5 rear's i think that you would be happy running a 275/30/19 rear, which will produse a pretty massive stretch